If you want to change org.omg you use the "endorsed mechanism" see the JDK docs. If this is the same question that appeared as a bug report (wrongly) then the issue has nothing to do with org.omg. It has to do with not using JacORB i.e. this FAQ http://wiki.jboss.org/wiki/WhyDoesCosNamingCreateANewORBForJndiLookups If it is the FAQ, then move your questions to the user forums. This is the development forums. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4143851#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...